<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{this.currentCity}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="area">
          <div class="title border-topbottom">热门城市</div>
        </div>
        <div class="button-list">
          <div class="button-wrapper" v-for="item of hot" :key="item.id" @click="handleCityClick(item.name)">
            <div class="button">{{item.name}}</div>
          </div>
        </div>
      </div>
      <div class="area" v-for="(item,key) of cities" :key="key" :ref="key">
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list">
          <div class="item border-bottom" v-for="innerItem of item" :key="innerItem.id"
               @click="handleCityClick(innerItem.name)">
            {{innerItem.name}}
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import BScroll from 'better-scroll'
import { mapState, mapMutations } from 'vuex'

export default {
  name: 'CityList',
  props: {
    hot: Array,
    cities: Object,
    letter: String
  },
  mounted () {
    this.scroll = new BScroll(this.$refs.wrapper)
  },
  computed: {
    ...mapState({
      currentCity: 'city'
    })
  },
  methods: {
    handleCityClick (city) {
      //this.$store.commit('changeCity', city)
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  }
}
</script>

<style lang="stylus" scoped>
  @import "~styles/varibles.styl"

  .list
    position absolute
    top 1.58rem
    right 0
    bottom 0
    left 0
    overflow hidden

  .title
    line-height .54rem
    background #eee
    padding-left .2rem
    text-align left
    color #666
    font-size .26rem

  .border-topbottom
    border-color #ccc

  .border-bottom
    &:before
      border-color #ccc

  .button-list
    overflow hidden
    padding .1rem .6rem .1rem .1rem

  .button-wrapper
    float left
    width 33.33%

  .button
    padding .1rem
    text-align center
    margin .1rem
    border .02rem solid #ccc
    padding .1rem 0
    border-radius .3rem

  .item-list
  .item
    line-height .76rem
    padding-left .2rem
    color #666
    text-align left
</style>
